WASHINGTON â The pressure is mounting for the U.S. and Canadian governments to lift or at least loosen restrictions at their shared border after 16 months, with seemingly no end point in sight. With COVID-19 vaccinations rising and infection rates plummeting, border communities, travel groups and long-separated families are anxious for officials, at minimum, to lay out a plan for reopening the 5,500-mile land boundary. Instead, the governments announced another extension of the restrictions through at least July 21. âThey are very frustrated because nobody can really explain what the holdup is,â said U.S. Rep. Bill Huizenga, a Michigan Republican who co-chairs the Canada-United States Inter-Parliamentary Group.